CN215813040U - Proton conductivity testing device for proton exchange membrane - Google Patents
Proton conductivity testing device for proton exchange membrane Download PDFInfo
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- CN215813040U CN215813040U CN202220024974.3U CN202220024974U CN215813040U CN 215813040 U CN215813040 U CN 215813040U CN 202220024974 U CN202220024974 U CN 202220024974U CN 215813040 U CN215813040 U CN 215813040U
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Abstract
The utility model discloses a proton conductivity testing device of a proton exchange membrane, which comprises a base body, a detection assembly and a connecting piece, wherein the base body is a high-temperature-resistant insulator and is provided with a first cavity, the bottom of the base body is suitable for being attached to the proton exchange membrane, one end of the detection assembly penetrates through the base body, one part of the detection assembly is positioned in the first cavity, the bottom of the detection assembly is suitable for detecting the proton conductivity of the proton exchange membrane, the bottom of the detection assembly is positioned on the outer side of the bottom of the base body in the height direction of the base body, or the bottom of the detection assembly is flush with the bottom of the base body in the height direction of the base body, the connecting piece is sleeved on the base body, and the outer edge of the proton exchange membrane is respectively clamped between the connecting piece and the base body. The proton conductivity testing device for the proton exchange membrane has the advantages of simple structure, long service life, low cost and the like.
Description
Technical Field
The utility model relates to the field of performance detection of proton exchange membranes of fuel cells, in particular to a proton conductivity testing device for a proton exchange membrane.
Background
A fuel cell is a power generation device that directly converts chemical energy into low-voltage direct current through an electrochemical reaction, i.e., direct current and water are generated through an electrochemical reaction between a fuel and an oxidant. Fuel cells are essentially a reverse device to water electrolysis. In the process of electrolyzing water, an external power supply electrolyzes the water to generate hydrogen and oxygen. In the fuel cell, hydrogen and oxygen react electrochemically to produce water, and electrical energy is released. The fuel cell monomer mainly comprises four parts, namely an anode, a cathode, a proton exchange membrane electrolyte and an external circuit. The proton exchange membrane is used as an electrolyte, which influences the speed of proton transfer and influences the internal resistance and output power of the battery.
In the related technology, the proton exchange membrane conductivity testing device has the advantages of inaccurate testing result, easy damage and short service life.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the utility model provides a proton conductivity testing device for a proton exchange membrane, which has a simple structure and a long service life and can work in a high-temperature and high-humidity environment.
The proton conductivity testing device for the proton exchange membrane comprises: the base body is a high-temperature-resistant insulator and is provided with a first cavity, and the bottom of the base body is suitable for being attached to a proton exchange membrane; one end of the detection assembly penetrates through the base body, part of the detection assembly is located in the first cavity, the bottom of the detection assembly is suitable for detecting proton conductivity of a proton exchange membrane, and the bottom of the detection assembly is located on the outer side of the bottom of the base body in the height direction of the base body, or the bottom of the detection assembly is flush with the bottom of the base body in the height direction of the base body; the connecting piece is sleeved on the base body, and the outer edge of the proton exchange membrane is clamped between the connecting piece and the base body respectively.
According to the proton conductivity testing device for the proton exchange membrane, provided by the embodiment of the utility model, the base body, the detection assembly and the connecting piece are arranged, so that the service life of the detection assembly is prolonged, the proton exchange membrane is prevented from being folded in the detection process, and the detection efficiency and accuracy of the proton exchange membrane are improved.
In some embodiments, the proton exchange membrane proton conductivity testing apparatus further comprises a first shell disposed on top of the base, and a portion of the detection assembly is located within the first shell.
In some embodiments, the detection assembly is a three-electrode system including a working electrode, a reference electrode, and an auxiliary electrode, the working electrode, the auxiliary electrode, and the reference electrode are all disposed within the substrate, the working electrode, the auxiliary electrode, and the reference electrode are disposed at intervals on the substrate, a bottom surface of the working electrode, a bottom surface of the auxiliary electrode, and a bottom surface of the reference electrode are all located outside a bottom portion of the substrate in a height direction of the substrate, or the bottom surface of the working electrode, the bottom surface of the auxiliary electrode, and the bottom surface of the reference electrode are all flush with the bottom portion of the substrate in the height direction of the substrate, the working electrode and the auxiliary electrode cooperate to detect a current flowing through the proton exchange membrane, the reference electrode and the working electrode cooperate, so as to apply a sinusoidal voltage to the proton exchange membrane.
In some embodiments, the working electrode and the auxiliary electrode are both platinum electrode pads disposed at the bottom of the base.
In some embodiments, the reference electrode comprises: a second housing having a second cavity, the second housing disposed within the first housing; a porous material, an upper portion of the porous material being disposed within the matrix and in communication with the second cavity of the second shell; the metal wire and the electrolyte are arranged in the second cavity, and the metal wire and the porous material are arranged at intervals along the height direction of the substrate.
In some embodiments, the reference electrode further comprises a tube having one end in communication with the second cavity and the other end extending through the first shell for adding the electrolyte solution to the second shell, and a seal disposed within the tube for sealing the tube.
In some embodiments, a through hole is formed in the top surface of the first shell, the proton exchange membrane proton conductivity testing device further includes a lead, one end of the lead is connected to the detection assembly, and the other end of the lead penetrates through the first shell through the through hole.
In some embodiments, the proton exchange membrane proton conductivity testing apparatus further includes a waterproof joint disposed on the first housing and opposite to the through hole, and the other end of the lead may be disposed on the waterproof joint.
In some embodiments, the connector is a sleeve that is mounted on the base by a threaded fit.
Drawings
Fig. 1 is a schematic structural diagram of a proton conductivity testing apparatus for a proton exchange membrane according to an embodiment of the present invention.
Fig. 2 is a bottom view of a proton conductivity testing apparatus for a proton exchange membrane according to an embodiment of the present invention.
Fig. 3 is an electrochemical ac impedance test curve of the proton conductivity testing apparatus of the proton exchange membrane according to the embodiment of the present invention in a constant temperature and humidity chamber with a relative humidity of 25% RH and a temperature of 25 ℃.
Fig. 4 is an electrochemical ac impedance test curve of the proton conductivity testing apparatus of the proton exchange membrane in the constant temperature and humidity chamber with a relative humidity of 40% RH and a temperature of 25 ℃.
Reference numerals:
proton exchange membrane proton conductivity testing apparatus 100;
a substrate 1; a detection assembly 2; a three-electrode system 21; a working electrode 211; a reference electrode 212; a second shell 2121; a porous material 2122; a wire 2123; a pipe 2124; a seal 2125; an auxiliary electrode 213; a connecting member 3; a first shell 4; a through hole 41; a waterproof joint 5; a wire 6; a first conductive line 61; a second conductive line 62; a third conductive line 63; a proton exchange membrane 7.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
The proton exchange membrane proton conductivity test apparatus according to the embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1-2, the proton exchange membrane proton conductivity testing apparatus according to the embodiment of the present invention includes a base 1, a detecting assembly 2, and a connecting member 3.
The substrate 1 is a high temperature-resistant insulator and has a first cavity (not shown), and the bottom of the substrate 1 is suitable for being attached to the proton exchange membrane 7. Specifically, as shown in fig. 1, the substrate 1 may be made of a high temperature resistant epoxy resin material, a first cavity is provided on the substrate 1, and the proton exchange membrane 7 may be attached to the bottom of the substrate 1.
One end of the detection assembly 2 is arranged on the base body 1 in a penetrating mode, a part of the detection assembly 2 is located in the first cavity, the bottom of the detection assembly 2 is suitable for detecting proton conductivity of the proton exchange membrane 7, the bottom of the detection assembly 2 is located on the outer side of the bottom of the base body 1 in the height direction (the vertical direction shown in fig. 1) of the base body 1, or the bottom of the detection assembly 2 is flush with the bottom of the base body 1 in the height direction of the base body 1. Specifically, as shown in fig. 1, the detection assembly 2 can be connected to a testing device, the upper portion of the detection assembly 2 is disposed in the first cavity, so that the detection assembly 2 is sealed in the base 1, so that the base 1 protects the detection assembly 2, and the detection assembly 2 is prevented from being damaged due to the influence of temperature and humidity in the constant temperature and humidity chamber, and the bottom of the detection assembly 2 protrudes from the bottom of the base 1, or the bottom of the detection assembly 2 is flush with the bottom of the base 1, so that the bottom of the detection assembly 2 can be in contact with the proton exchange membrane 7, and the proton conductivity of the proton exchange membrane 7 is detected.
The connecting piece 3 is sleeved on the base body 1, and the outer edges of the proton exchange membranes 7 are respectively clamped between the connecting piece 3 and the base body 1. Specifically, as shown in fig. 1, the connecting member 3 is a sleeve, wraps the proton exchange membrane 7 at the bottom of the base 1, and is inserted into the base 1 through the connecting member 3, so that the outer edge of the proton exchange membrane 7 is respectively clamped between the connecting member 3 and the base 1, the proton exchange membrane proton conductivity testing apparatus 100 is placed in a constant temperature and humidity chamber (not shown in the figure), and the high temperature and high humidity gas in the constant temperature and humidity chamber humidifies the proton exchange membrane 7 through the bottom of the proton exchange membrane 7.
The proton exchange membrane proton conductivity testing device 100 provided by the embodiment of the utility model is provided with the substrate 1 and the detection assembly 2, so that the detection assembly 2 is prevented from being corroded by high-temperature and high-humidity airflow when working in a constant-temperature and constant-humidity box, the service life of the detection assembly 2 is prolonged, in addition, the connecting piece 3 is arranged, so that the proton exchange membrane 7 is in close contact with the bottom surface of the detection assembly 2, the proton exchange membrane 7 is prevented from being folded, and the accuracy of the measurement result of the detection assembly 2 is ensured.
In some embodiments, the proton exchange membrane proton conductivity testing apparatus 100 of the present invention further includes a first shell 4, the first shell 4 is disposed on top of the base 1, and a portion of the detection assembly 2 is located in the first shell 4. Specifically, as shown in fig. 1, the first shell 4 is disposed on the top of the base 1, the first shell 4 includes a side surface and a top surface, and thus, through the cooperation of the first shell 4 and the base 1, a closed space is formed inside the base 1 and the first shell 4, the detection assembly 2 can be disposed on the base 1, and a part of the detection assembly 2 is disposed in the first shell 4, so that the thickness of the base 1 is reduced, the mass of the proton exchange membrane proton conductivity testing apparatus 100 is reduced, and the proton exchange membrane proton conductivity testing apparatus 100 is disposed more reasonably.
In some embodiments, the detecting component 2 is a three-electrode system 21, the three-electrode system 21 includes a working electrode 211, a reference electrode 212 and an auxiliary electrode 213, the working electrode 211, the auxiliary electrode 213 and the reference electrode 212 are all arranged in the base body 1, the working electrode 211, the auxiliary electrode 213 and the reference electrode 212 are arranged at intervals on the base body 1, the bottom surface of the working electrode 211, the bottom surface of the auxiliary electrode 213 and the bottom surface of the reference electrode 212 are all positioned outside the bottom of the base body 1 in the height direction of the base body 1, or the bottom surface of the working electrode 211, the bottom surface of the auxiliary electrode 213, and the bottom surface of the reference electrode 212 are all flush with the bottom of the base 1 in the height direction of the base 1, the working electrode 211 and the auxiliary electrode 213 are fitted, in order to detect the current flowing through the proton exchange membrane 7, the reference electrode 212 and the working electrode 211 cooperate to apply a sinusoidal voltage to the proton exchange membrane 7.
Specifically, as shown in fig. 1, the detection assembly 2 is a three-electrode system 21, the working electrode 211 and the auxiliary electrode 213 are provided at the bottom of the base 1, the bottom of the working electrode 211 and the bottom of the auxiliary electrode 213 may be flush with the bottom of the base 1, or the bottom of the working electrode 211 and the bottom of the auxiliary electrode 213 may protrude from the bottom of the base 1, such that the working electrode 211 and the auxiliary electrode 213 are in contact with the proton exchange membrane 7, the reference electrode 212 is provided on the base 1, and an upper portion of the reference electrode 212 is located in the first shell 4, the bottom of the reference electrode 212 may be flush with the bottom of the base 1, or protrude from the bottom of the base 1, such that the bottom of the reference electrode 212 is in contact with the proton exchange membrane 7, such that the working electrode 211 and the auxiliary electrode 213 cooperate to detect the current flowing through the proton exchange membrane 7, the reference electrode 212 and the working electrode 211 cooperate to apply a sinusoidal voltage to the proton exchange membrane 7, thus, the three-electrode system 21 tests the ac impedance value of the proton exchange membrane 7 under given conditions by the electrochemical ac impedance method.
In some embodiments, the working electrode 211 and the auxiliary electrode 213 are both platinum electrode pads provided on the bottom of the base 1. The platinum electrode plate has small resistance, so that the accuracy of the current flowing through the proton exchange membrane 7 is improved.
In some embodiments, reference electrode 212 includes a second shell 2121, a porous material 2122, a wire 2123, and an electrolyte (not shown in the figures).
The second housing 2121 has a second cavity (not shown), and the second housing 2121 is disposed within the first housing 4. Specifically, as shown in fig. 1, the second shell 2121 is made of glass, and the second shell 2121 is disposed on the substrate 1 and located inside the first shell 4.
An upper portion of the porous material 2122 is disposed within the base 1 and communicates with the second cavity of the second shell 2121. Specifically, as shown in fig. 1, the porous material 2122 is a porous ceramic, the porous material 2122 is provided at the bottom of the second shell 2121, and the porous material 2122 is located inside the base 1, the base of the porous material 2122 is located outside the bottom of the base 1 in the height direction of the base 1, or the bottom surface of the base of the porous material 2122 is flush with the bottom of the base 1 in the height direction of the base 1.
The wires 2123 and the electrolyte are disposed in the second cavity, and the wires 2123 and the porous material 2122 are disposed at intervals along the height direction of the substrate 1. Specifically, as shown in fig. 1, the metal wire 2123 is an Ag/AgCl wire, the electrolyte is a KCl solution, and the internal resistance of the Ag/AgCl wire is high, so that the reference electrode 212 is more reasonably arranged, the reference electrode 212 is matched with the auxiliary electrode 213, and the voltage of the proton exchange membrane 7 is detected.
In some embodiments, reference electrode 212 further comprises a conduit 2124 and a seal 2125, wherein conduit 2124 is disposed through first housing 4, one end of conduit 2124 is in communication with the second chamber, the other end of conduit 2124 extends through first housing 4 for adding electrolyte solution to second housing 2121, and seal 2125 is disposed within conduit 2124 for sealing conduit 2124. Specifically, as shown in fig. 1, a pipe 2124 is disposed between the first shell 4 and the second shell 2121, a left end of the pipe 2124 penetrates into the second shell 2121 and is communicated with the second cavity, a right end of the pipe 2124 penetrates out of the first shell 4, so that a KCl solution can be added to the second shell 2121 through the pipe 2124, a sealing element 2125 is a rubber block, and the sealing element 2125 can be disposed in the pipe 2124 in a penetrating manner, so that after the KCl solution is added, the pipe 2124 can be sealed by the sealing element 2125, the KCl solution in the second shell 2121 is prevented from evaporating or losing, or an object outside the first shell 4 is prevented from entering the second shell 2121 through the pipe 2124, and the KCl solution in the reference electrode 212 is prevented from being polluted.
In some embodiments, the top surface of the first shell 4 is provided with a through hole 41, and the proton exchange membrane proton conductivity testing apparatus 100 further includes a lead 6, one end of the lead 6 is connected to the detecting assembly 2, and the other end of the lead 6 penetrates out of the first shell 4 through the through hole 41. Specifically, as shown in fig. 1, the lead 6 includes a first lead 61, a second lead 62 and a third lead 63, and the first lead 61, the second lead 62 and the third lead 63 are all disposed in the first shell 4, the lower end of the first lead 61 is connected to the auxiliary electrode 213, the lower end of the second lead 62 is connected to the working electrode 211, the lower end of the third lead 63 is connected to the reference electrode 212, and the upper ends of the first lead 61, the second lead 62 and the third lead 63 all penetrate out of the first shell 4 through the through hole 41 and are connected to the testing device, so that the proton conductivity testing device 100 for proton exchange membrane is more reasonably disposed.
In some embodiments, the proton exchange membrane proton conductivity testing apparatus 100 further includes a waterproof connector 5, the waterproof connector 5 is disposed on the first shell 4 and opposite to the through hole 41, and the other end of the lead 6 can be inserted on the waterproof connector 5. Therefore, the high-temperature and high-humidity gas in the detection box can be prevented from flowing into the first shell 4 through the through hole 41 by the waterproof joint 5, and the service life of the proton conductivity testing device 100 of the proton exchange membrane is ensured.
In some embodiments, the detection assembly 2 may also be any one of a two-electrode system (not shown) and a four-electrode system (not shown). Therefore, the conductivity and the electric conductivity of the proton exchange membrane 7 can be detected through the two-electrode system and the four-electrode system, so that the diversity of the proton exchange membrane proton conductivity testing device 100 is improved.
In some embodiments, the connector 3 is a sleeve that is mounted on the base 1 by a threaded fit. Specifically, the inner circumferential surface of the sleeve is provided with internal threads (not shown in the figure), the outer circumferential side of the base 1 is provided with external threads (not shown in the figure), and the sleeve is fixed on the base 1 and then fixed through the matching of the internal threads and the external threads.
The utility model adopts an alternating current impedance method for testing, the testing frequency is 100000-1Hz, and the amplitude of disturbance sine voltage is 10-20 mV. The measurement result is fitted by an impedance equivalent circuit to obtain a membrane resistance R of the proton exchange membrane 7, and then the conductivity formula K = L/(R × S) is obtained, where L is the distance between the working electrode 211 and the auxiliary electrode 213, R is the resistance of the proton exchange membrane 7, and S is the cross-sectional area of the membrane.
Taking the perfluorinated sulfonic acid resin proton exchange membrane as an example, the temperature in the constant temperature and humidity chamber is 25 ℃, the relative humidity is 25%, and the temperature is stabilized for 1h under the condition of 40% respectively until the open-circuit potential is stabilized. And an electrochemical workstation is adopted for impedance measurement, the amplitude of the sine wave is 10mV, the amplitude of the direct current polarization is 0V relative to the open circuit potential, the scanning frequency range is 100000-1Hz, and the frequency is 10 points/10 octaves.
The stability is respectively 1h under the condition of 40 percent until the open-circuit potential is stable. And an electrochemical workstation is adopted for impedance measurement, the amplitude of the sine wave is 10mV, the amplitude of the direct current polarization is 0V relative to the open circuit potential, the scanning frequency range is 100000-1Hz, and the frequency is 10 points/10 octaves. The test results are shown in fig. 3 and 4.
Applying a perturbation voltage from 100kHz to 1Hz to the proton exchange membrane 7, an electrochemical AC impedance diagram of the proton exchange membrane 7 can be finally obtained, wherein the abscissa of FIGS. 3 and 4 represents the real part of the impedance, and the ordinate represents the imaginary part of the impedance, as shown in FIGS. 3 and 4. The ion mobility resistance R (25%, 50.6 k.OMEGA.; 40%, 22 k.OMEGA.) can be read from the intersection of the data point and the real resistance in the graph.
From fig. 3 and 4, as the surface humidity of the perfluorosulfonic acid resin proton exchange membrane increases, the resistance value of the membrane gradually decreases. The proton membrane conductivity calculation formula is as follows: k = L/(R × S). Where L is the spacing between working electrode 2111 and reference electrode 212, R is the resistance of proton exchange membrane 7, and S is the cross-sectional area of the membrane.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A proton conductivity testing device for proton exchange membranes is characterized by comprising: the base body is a high-temperature-resistant insulator and is provided with a first cavity, and the bottom of the base body is suitable for being attached to a proton exchange membrane; one end of the detection assembly penetrates through the base body, part of the detection assembly is located in the first cavity, the bottom of the detection assembly is suitable for detecting proton conductivity of a proton exchange membrane, and the bottom of the detection assembly is located on the outer side of the bottom of the base body in the height direction of the base body, or the bottom of the detection assembly is flush with the bottom of the base body in the height direction of the base body; the connecting piece is sleeved on the base body, and the outer edge of the proton exchange membrane is clamped between the connecting piece and the base body respectively.
2. The proton exchange membrane proton conductivity testing apparatus of claim 1, further comprising a first shell disposed on top of the base, a portion of the detection assembly being located within the first shell.
3. The proton exchange membrane proton conductivity testing apparatus of claim 2, wherein the detection assembly is a three-electrode system including a working electrode, a reference electrode, and an auxiliary electrode,
the working electrode, the auxiliary electrode and the reference electrode are all arranged in the substrate, the working electrode, the auxiliary electrode and the reference electrode are arranged on the substrate at intervals, the bottom surface of the working electrode, the bottom surface of the auxiliary electrode and the bottom surface of the reference electrode are all positioned outside the bottom of the substrate in the height direction of the substrate, or the bottom surface of the working electrode, the bottom surface of the auxiliary electrode and the bottom surface of the reference electrode are all flush with the bottom of the substrate in the height direction of the substrate, the working electrode and the auxiliary electrode are matched so as to detect the current flowing through the proton exchange membrane, and the reference electrode and the working electrode are matched so as to be used for applying a sinusoidal voltage to the proton exchange membrane.
4. The proton exchange membrane proton conductivity testing device of claim 3, wherein the working electrode and the auxiliary electrode are both platinum electrode plates, and the platinum electrode plates are arranged at the bottom of the base body.
5. The proton exchange membrane proton conductivity testing apparatus of claim 3, wherein the reference electrode comprises:
a second housing having a second cavity, the second housing disposed within the first housing;
a porous material, an upper portion of the porous material being disposed within the matrix and in communication with the second cavity of the second shell;
the metal wire and the electrolyte are arranged in the second cavity, and the metal wire and the porous material are arranged at intervals along the height direction of the substrate.
6. The pem proton conductivity testing apparatus of claim 5, wherein said reference electrode further comprises a tube and a sealing member, said tube is disposed in said first shell, one end of said tube is connected to said second chamber, the other end of said tube is extended out of said first shell for adding said electrolyte solution into said second shell, and said sealing member is disposed in said tube for sealing said tube.
7. The proton exchange membrane proton conductivity testing apparatus of claim 2, wherein the top surface of the first shell is provided with a through hole,
the proton exchange membrane proton conductivity testing device further comprises a lead, one end of the lead is connected with the detection assembly, and the other end of the lead penetrates out of the first shell through the through hole.
8. The proton exchange membrane proton conductivity testing apparatus as claimed in claim 7, further comprising a waterproof joint disposed on the first housing and opposite to the through hole, wherein the other end of the lead is disposed on the waterproof joint.
9. The proton exchange membrane proton conductivity testing apparatus of any one of claims 1 to 8, wherein the connector is a sleeve, and the sleeve is mounted on the base body by screw-fitting.
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| CN202220024974.3U CN215813040U (en) | 2022-01-07 | 2022-01-07 | Proton conductivity testing device for proton exchange membrane |
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| CN202220024974.3U CN215813040U (en) | 2022-01-07 | 2022-01-07 | Proton conductivity testing device for proton exchange membrane |
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